Additional Items Required:
I purchased a running light with a mini red blinking LED (https://alpkit.com/products/blip) however the clip is for shoe laces or a head torch strap, neither of which were what I wanted.
I therefore designed a base with a small 5mm x 1.5mm magnet in it to attach the original cover of the light as well as the internal light and battery enclosure from the “blip”. This attaches to a cup (base) with another small magnet in which clips the light securely to my running t-shirt.
Printed at 0.2mm layer height with no supports and combing turned on.
The author marked this model as their own original creation.